[FOSDEM] Who created the FOSDEM Companion mobile app? is it open source?

Hey all, Thank you so much for putting FOSDEM together - it's been a fantastic experience. Always great to meet everyone and get to learn of new projects. Especially the last keynote (NSA Orchestra project) - that was fantastic way to end the conference :) I really loved the mobile app, and wanted to ask if the developer would mind sharing the code as I would like to extend it and build on top of it for another conference I'm running. Thanks! Zohar Babin